org.glassfish.appclient.client

Class MaskingClassLoader

java.lang.Object

java.lang.ClassLoader

org.glassfish.appclient.client.MaskingClassLoader

public class MaskingClassLoader
extends ClassLoader

ClassLoader that masks a specified set of classes from its parent class loader.

This code is used to create an isolated environment.

Author:

Jerome Dochez

Constructor Summary

Constructors

Constructor and Description
MaskingClassLoader(ClassLoader parent, Collection<String> punchins, Collection<String> multiples)
MaskingClassLoader(ClassLoader parent, Collection<String> punchins, Collection<String> multiples, boolean useExplicitCallsToFindSystemClass) Creates a new masking class loader letting a set of defined packages be loaded by the parent classloader.

Method Summary

Modifier and Type	Method and Description
URL	getResource(String name)
Enumeration<URL>	getResources(String name)
protected boolean	isDottedNameLoadableByParent(String name)
protected Class<?>	loadClass(String name, boolean resolve)

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findResources, findSystemClass, getClassLoadingLock, getPackage, getPackages, getParent, getResourceAsStream, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, registerAsParallelCapable, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MaskingClassLoader

public MaskingClassLoader(ClassLoader parent,
                          Collection<String> punchins,
                          Collection<String> multiples)

MaskingClassLoader

public MaskingClassLoader(ClassLoader parent,
                          Collection<String> punchins,
                          Collection<String> multiples,
                          boolean useExplicitCallsToFindSystemClass)

Creates a new masking class loader letting a set of defined packages be loaded by the parent classloader. Multiples packages can be specified so that only the parent package needs to be provided.

Parameters:

parent - the parent classloader to delegate actual loading from when punchin is allowed

punchins - list of packages allowed to be visible from the parent

multiples - list of parent packages allowed to be visible from the parent class loader

Method Detail

loadClass

protected Class<?> loadClass(String name,
                             boolean resolve)
                      throws ClassNotFoundException

Overrides:

loadClass in class ClassLoader

Throws:

ClassNotFoundException

getResource

public URL getResource(String name)

Overrides:

getResource in class ClassLoader

getResources

public Enumeration<URL> getResources(String name)
                              throws IOException

Overrides:

getResources in class ClassLoader

Throws:

IOException

isDottedNameLoadableByParent

protected boolean isDottedNameLoadableByParent(String name)